Air Conditioning problem
2002 Chevy Truck V8 Two Wheel Drive Automatic 18000 miles
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I have a 2002 RV with the V8 workhorse engine. I was driving in 100 degree heat for about 2 hrs. when the dash air started blowing very hot air. I don't know if the air was engine heated or outside air ,but it was very hot.I turned it off for about 40 miles and tried again, but still hot.The next day I drove it and it worked .I drove the RV back to the house[10]miles,backed it in and it started blowing very hot air again,90+ degree heat.Suggestions appreciated. Thank you